Abstract
Using an improved procedure to isolate pure bile ductular epithelial cells from rat liver, we were able to define UDP-glucuronosyl transferase (UDPGT) isozymes expressed in these cells under physiological conditions. The cells contained mRNA for a 17 beta-hydroxysteroid, a 3 alpha-hydroxysteroid and a phenol UDPGT. Concomitantly, a distinct pattern of UDPGT-immunoreactive proteins was expressed, including a putative 17 beta-hydroxysteroid UDPGT. The presence of this UDPGT isozyme was confirmed by a high level of testosterone glucuronidation activity. This is the first demonstration of a metabolic pathway in bile ductular epithelial cells that is primarily dedicated to the processing of endogenous compounds.
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More From: Biochemical and Biophysical Research Communications
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